Nim Deathmantle + Phyrexian Altar + Knight of the Last Breath

Prerequisites

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Steps

1. 1Activate Ashnod's Altar by sacrificing Knight of the Last Breath, adding .
2. 2When Knight of the Last Breath dies, its afterlife ability and Nim Deathmantle trigger.
3. 3Resolve the Knight of the Last Breath trigger, creating three 1/1 Spirit creature tokens.
4. 4Activate Phyrexian Altar three times by sacrificing the Spirits, adding .
5. 5Resolve the Nim Deathmantle trigger from step 2, causing you to pay to return Knight of the Last Breath from your graveyard to the battlefield, and attach Nim Deathmantle to it.
6. 6Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers